51
Thermo King
Warning

Check Shutdown Circuit

Failure detected in the engine safety shutdown circuit.

Possible causes

  • Defective shutdown relay
  • Failing fuel solenoid
  • Problem in stop signal wiring
  • Control logic failure

Recommended actions

  • Test shutdown solenoid operation
  • Verify safety relays on the board
  • Inspect shutdown signal wiring
  • Perform system self-diagnosis

Can't find your code? Talk to an expert

$150

One-on-one phone session with a Low Temp refrigeration tech. Emergency temporary assistance only.

Have a question? Ask the community

Thousands of refrigeration mechanics read and answer for free. Post your case in under 1 minute.

Need a professional diagnosis?

Low Temp Service — refrigeration experts in Florida.

Contact us